Close12.18.2007 11:23 AM
U.S. Set for 8th Warmest Year on Record
2007 Ranks 5th Worldwide; Extreme Weather Follows
2007 in the contiguous United States is likely to take its place as the eighth warmest on record, about 1.5 degrees warmer than the 20th-century average, according to a preliminary analysis by the National Oceanographic and Atmospheric Administration.
"The year was marked by exceptional drought in the U.S. Southeast and the West, which helped fuel another extremely active wildfire season," as the official NOAA announcement put it. "The year also brought outbreaks of cold air, and killer heat waves and floods."
NOAA didn't explicitly link a warmer climate and the year's extreme weather events, but scientists have repeatedly predicted that global warming will spawn increasingly frequent and intense extreme weather, such as flooding, drought and strong storms. It did tie the increased warmth to energy use, noting that summer energy demand was 8% greater than expected during an average year, and winter energy use was 3% lower.
Meanwhile, the worldwide average surface temperature is on pace to rank as the fifth warmest since record-keeping began in 1880, with the greatest temperature anomalies recorded in eastern Europe and central Asia.
Some additional facts about global temperature:
Seven of the eight warmest years on record have occurred since 2001, and the 10 warmest have all occurred since 1997.
The global average surface temperature is up 0.7 degree (C) since 1900, and the rate of warming has tripled since 1976.
The greatest warming has taken place in high latitude regions of the Northern Hemisphere. Anomalous warmth in 2007 contributed to the lowest Arctic sea ice extent since satellite records began in 1979, surpassing the previous record low set in 2005 by a remarkable 23 percent. According to the National Snow and Ice Data Center, this is part of a continuing trend in end-of-summer Arctic sea ice extent reductions of about 10% per decade since 1979.
Read more about the extreme weather of 2007 in the continental U.S.
The contiguous United States is on pace to reach its 8th hottest year on record in 2007. Here are some of the weather extremes and their impacts recorded this year:
$1 billion in crop damage was sustained when exceptional late March warmth led to early maturation of plants that were killed when a record April cold snap hit a large portion of the country, from the central Plains to the Southeast.
More than 2,500 new daily record high temperature records were set in August across the central and southeastern United States.
Severe to exceptional drought affected most of the Southeast that has continued from midsummer to date, affecting crops, leading to water sharing tension and ongoing water use restrictions. Drought also affected the West, parts of the upper Midwest and parts of the Northeast. Five southeastern states, two Western states and three mid-Atlantic and New England states declared states of emergency due to drought.
Death and millions of dollars in damages followed a series of strong storms from Texas to Kansas and Missouri in June and July. Making matters worse were the remnants of Tropical Storm Erin, which produced heavy rainfall in the same region in August.
9 million acres burned as wildfires, fueled by heat and drought, raged across the Western United States, destroying homes and leading to several deaths.
15 named tropical storms formed in the Atlantic Basin, four more than the long term average. Six of them were hurricanes, including Dean and Felix which made the first back-to-back Category 5 landfalls in recorded history.
Find this article at: http://www.thedailygreen.com/environmental-news/latest/record-temperature-47121805